This guide describes settings that must be configured on 4G LTE Feature phones for use overseas and how to use these devices.
Confirming Data Charge subscription status
To use World Data Flat, you must be subscribed to Data Charge. (Free)
Check your subscription status and apply by clicking the button below.
Turn your device's international settings on[1]
(1) Using data communications
Setting example) Using data communications
■4G LTE Feature phones
設定(Settings) → 8.通信・ネットワーク(Communications and networks) → ネットワーク設定(Network settings) → モバイルネットワーク(Mobile network) → ネットワークモード(Network mode) → 自動(Automatic) → Set "データローミング(Data Roaming)" to ON
* Depending on the model, some menu names and procedure may differ. See the user manual for more information.
* If you are still unable to use even after setting the above, turn the power off and on, and check again.
<If necessary> Airplane Mode setting
If necessary, set your device to Airplane Mode during your flight.
(2) Making calls and using SMS
From the settings, check that "Data Roaming" is set to on.
Once you have arrived abroad, you be notified via SMS of whether or not you can use the World Data Flat service. This SMS notification is sent free of charge.
By clicking the URL in the SMS notification (http://www.sekai.kddi.com/kddijp-up/), your browser is launched and the "start service" screen is displayed. If using the World Data Flat App, the "start service" screen is displayed by starting the app.
Turn Wi-Fi off to display the "start services" screen.
Push the "start services" button
Turn Wi-Fi off to display the "start services" screen.
For World Data Flat
You should now be able to use.
Restore the settings for use in Japan
If "自動(Automatic)" is selected for the network mode, you can use the device as-is.
Or, switch the network mode to "日本(Japan) (4G)" to use.
4G LTE Feature phone
センターキー(Center key) → 設定(Settings) → 8.通信・ネットワーク(Communications and networks) → ネットワーク設定(Network settings) → モバイルネットワーク(Mobile network) → ネットワークモード(Network mode) → 日本(Japan) (4G)